Eitoet



(No Model.)

A. D. KILBORN & W. F. SMITH.

GAR BRAKE.

No. 270,440 Patented Jan.9,1883-..

ATTORNEYS.

TATES i UNITE ATET- ALDEN D. KILBORN Annv WILLIAM F. SMITH, or TUCSON, ARIZONA cran- RITORY.

C AR=BRAKE.

SPECIFICATION forming part of Letters Patent No. 270,440, dated January 9, 1883.

Application filed June 29, 1882.

To all whom it may concern Be it known thatwe, ALDEN I). KILBORN and WILLIAM F. SMITH, of Tucson, in the county of Pima and Territory of Arizona, have invented a new and useful Improvement in Brake-Rods for Trucks, of which the following is a full, clear, and exact description.

This invention relates to brakes for the trucks of locomotive-engines and railroad-cars, in which brake-beams carrying brake-shoes on their opposite ends are used, These benmsare connected together by a brake-rod and attached devices for drawing them toward each other, so as to cause the brake-shoes to act upon duplicate pairs of wheels at the same time.

The invention consists in the peculiar construction and arrangement of the parts, ashereinafter more fully set forth, and pointed out in the claim.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate correspondingparts in all the figures.

Figure 1 represents a plan of a pair of brakebeams with our improvement applied to the rods by which said beams are connected and operated.- Fig. 2 is a longitudinal partly-sectional view, upon a larger scale, of one of the adjustable rod-connections. Fig. 3 is a perspective view thereof; and Fig. 4 representsa plan View of a pair of brake-beams provided with brake-shoes on their ends, two pairs of car-wheels, and our improvements applied to the brake-beams.

A B indicate the pair of brake-beams, and O the rod by which they are connected, such connection being made in part through theintervention of a lever, D, pivoted at b to the beam A, and having thedxaw-rod E attached to it. The rod Uis constructed at the end by which it is attached to the beam B with astrap, J. This strap serves to receive within it either a rubber or coiled-metal spring, 6, the tension of which is in direction of the length of the rod 0, and which rests at its opposite ends between headsff, arranged upon or around a screw-rod, g, that passes centrally through the scribed.

(No model.)

spring and in line with the rod (1. Said screwrod 9 projects freely or loosely through the outer end of the strap d, and is attached by an eye or loop to an eyebolt, h, that secnresit to the beam B. The heads ff are both fitted to admit of an independent sliding movement along the screw-rod g to provide for the expansion and contraction of the spring, the tension of which may be regulated either by a screw-collar, k, on the outer end of the strap, or by a nut, l, at the back of the head f, said collar and nut fitting the thread on the screwrod 9. In this way or by these means is the rod 0, which connects the beams A B, made adjustable and secured by an elastic connection. The draw-rod E, by which the brake is operated, has a similar adjustable and elastic connection with the lever D.

We are aware=that springs have heretofore been employed, in connection with brake applian'ces, to allow the wheels to revolve when the brakes are applied, instead of slipping on the tracks, and we therefore lay no claim, broadly, to the employment'ot' springs with brake appliances. our invention being confined to the'construction and arrangement of parts pointed out in the claim.

Having thust'ully described our invention, what we claim as new, and desire to secure by Letters Patent, is-

In a car-brake, the combination, with the brake-beams A B, having brake-shoes on their ends, and the adjustable brake-rod 0, provided with the strap'd, threaded eyebolt g, heads ff, spring 6, nuts L 70, and eyebolt It, secured to the brake-beam B, of the draw-rod E, provided at its outer end with a strap, spring, heads, and nuts, as on the brake-rod C, and lever-D, fulcrnmed in the beam A, and

having its ends pivoted to the brake, and draw.

rods 0 E, substantially as shown and de- ALDEN D. KILBORN. \VILLIAM F. SMITH.

Witnesses:

F. K. MILLER, B. 1). FERGUSON. 

